If you used one of the résumé templates that come with Word or
that are available on the Microsoft website, then your résumé
probably contains a table that forms the columns and rows.
If there are border lines around the table cells, and if the
border lines print, and if you don't want the border lines to
print, then click somewhere in the table, click on Table | Select
| Table, and click on Format | Borders and Shading | Borders tab
| Setting: None | OK.
If there are faint gridlines around the table cells on the
screen, and if the gridlines do not print, and if you don't want
to see the gridlines on the screen, then click on Table | Hide
Gridlines. Note that this is a per-computer setting, which means
that your choice to show or hide gridlines on your computer won't
affect how someone to whom you send the file will see the
gridlines on his/her computer.
Wow, that was a lot of ifs. I sure hope you demonstrated better
expository writing skills on your résumé than you did in asking
this question.